Engine unit and straddled vehicle

Abstract

The present invention relates to an engine unit 21 and a straddled vehicle 1. The engine unit 21 includes an engine 22, a motor 24, a first sensor 23, and a controller 25. The motor 24 is connected to the engine 22. The motor 24 is configured to rotate the engine 22. The first sensor 23 detects a rotation speed G of the engine 22. The controller 25 performs a first assist control DA1 based on a detection result of the first sensor 23. In the first assist control DA1, the controller 25 causes the motor 24 to rotate the engine 22. When the rotation speed G is lower than a first threshold H1, the controller 25 starts the first assist control DA1. The first threshold H1 is lower than an idle speed range J of the engine 22.